JP3961542B2 - Coffee filter - Google Patents

Description

  The present invention relates to a drip coffee filter in which coffee liquid is directly extracted into a coffee cup by pouring hot water into coffee powder placed directly on a coffee cup and accommodated in a filter bag.

  In a so-called disposable coffee filter that is discarded after one-time use, a filter bag (bag) containing a required amount of coffee powder is put into a coffee cup (hereinafter simply referred to as a cup), and the cup There is also a so-called immersion type filter, that is, a tea bag type filter that extracts the coffee liquid by immersing it in hot water stored inside, but many commercially available filters are hung on the edge of the cup. The so-called drip-type coffee filter, which supports the filter bag (bag) and accumulates the coffee liquid in the cup while pouring hot water into the coffee powder contained inside from the opening and filtering, is widely used. ing.

  In addition, in the disposable coffee filter according to the drip method, the bottom of the bag body is placed on the coffee liquid extracted by supporting the cup from the top of the cup while being supported by using the cup edge. The one that is not contacted, that is, the one that is closer to the structure of the original drip filter, and the entire bag body is placed in the cup and suspended while the cup rim is used as a scaffold, mainly the bag There are two types, one for pouring hot water while keeping the body's opening in place and the other for impregnation type that prevents falling.

  And in the former drip filter, when placed on the cup, the bottom of the bag body is supported higher than the liquid level so as not to be immersed in the extracted coffee liquid, and the cup Some of the bags are supported in the state that the bottom of the bag is immersed in the coffee liquid.

It can be said that the difference between the two is basically caused by the structure of the support (leg part) that supports the bag. In particular, it differs depending on the strength and supporting force of the support.
In order to get close to the drip filter, it is desirable not to immerse the bag in the extraction process on the coffee liquid level stored in the cup. However, the disposable filter has a limited amount of extraction liquid. The materials used are limited in terms of manufacturing costs and disposal due to the fact that they are formed in a relatively small size, and are discarded after a single use. In this sense, generally, cardboard or the like is often selected as the support material in terms of processability and material unit price.

  However, even if a cup of coffee liquid is extracted, 50 to 100 cc of hot water is poured into the supported bag body at the same time in addition to the coffee powder. This is due to efficient extraction in a short time. However, when a support is formed from cardboard, the weight must be strong enough to allow safe injection. Will be. Therefore, it is not easy to have a structure that supports the surface of the coffee liquid to be extracted.

Conventionally, there is a filter disclosed in Patent Document 1 as a filter that supports the bag body higher than the level of the coffee liquid stored in the cup. For example, Patent Document 2 discloses a filter of a type in which a bottom portion of a bag that is hooked and placed on the edge of a cup is immersed in an extracted coffee liquid.
Japanese Examined Patent Publication No. 59-30411. Japanese Patent Laid-Open No. 11-178720.

  When the coffee filter described in Patent Document 1 is attached to the cup, the engaging piece portion 18 at the tip of the support 10 is inserted into the inside of the cup, and the edge portion 19 is placed on the outside of the cup. In this structure, the edge of the cup is sandwiched from inside and outside. This filter has a structure that does not easily come off the edge of the cup, and is supported by a pair of supports 10 in a state in which the bag is suspended in the center, so that stable support can be obtained. Supporting at a high position from the level of the coffee liquid stored in the cup, the re-contact between the extracted coffee liquid and the coffee powder in the bag can be cut off.

  Therefore, although the filter in this patent document 1 has simple structure and can extract full-scale regular coffee easily and safely, one problem requires many cardboards for a support body. In connection with this, the size of the product becomes a little larger, which prevents further downsizing of the product.

On the other hand, in the drip bag according to Patent Document 2, that is, the coffee filter, the hooking member 3a is provided on the two opposite surfaces (front and rear surfaces) 2a and 2b of the bag body 2 formed of a filterable sheet material (filter). In connection with the structure to be fixed, the tongue piece 6 provided at the tip of the arm 5 of the hooking member 3a is hung on the edge of the cup, and is placed on the outside of the cup so as to cross the opening 22 of the cup. It is intended to be worn by hand.
The bag body 2 is supported in a suspended state at the center of the opening of the cup by the attachment of the latch member 3a, and hot water is poured into the coffee powder stored in the bag body 2 to store the coffee liquid in the cup. It is supposed to be.

  As described above, the coffee filter described in Patent Document 2 pulls out the tongue piece portion 6 of the latch member 3a provided on the two surfaces 2a and 2b of the bag body 2 and extends the arm portion 5. It is easy to handle and can be used easily because it is hung on the outside of the cup so as to straddle the edge of the cup, and it is easy to use, but above all, the above-mentioned retaining member 3a is made of cardboard and compactly formed. is there. However, on the other hand, because it is this cardboard and because it is small, the bag body 2 at the time of mounting has a problem that the bottom part goes down deeply into the cup and soaks in the extracted coffee liquid. is there.

  The immersion of the bag body 2 with respect to the coffee liquid is, in terms of structure, the tongue piece portion 6 of the hooking member 3a that is fixed in the middle of the height of the front and rear surfaces 2a and 2b of the bag body 2, that is, fixed The arm portion 5 is extended from the lower end of the piece, and the structure is such that the arm portion 5 is hooked to the edge of the cup via a peripheral edge portion 4 (hanging piece) provided at the upper end of the arm portion 5. That is, from the above structure, the structure is such that, when mounted, the latching member 3a is suspended from the edge of the cup, and the bag body 2 is supported at the tip, so that the bottom part inevitably falls. By becoming.

On the other hand, it was selected that the structure of supporting the hanging member 3a having the above structure was made of cardboard because it was supported by being hooked and suspended rather than supported by lifting it from the bottom. It can also be said that it depends.
However, for any reason, it is not preferable for the drip coffee filter to be lowered and soaked in the coffee liquid, and it is required to be supported as high as possible from the liquid level.

  In view of the actual situation of the coffee filter according to the above-mentioned drip-type disposable, the present invention reduces the manufacturing cost including the material to be used, and at the time of mounting on the cup, the bottom of the bag body containing the coffee powder is extracted. Developed for the purpose of providing a disposable coffee filter with a simple structure that is close to the original drip coffee filter by supporting it at a high position from the liquid level and avoiding contact between the extracted coffee liquid and the coffee powder in the bag. It has been done.

  In particular, the present invention is an improvement of the support that supports the bag when attached to the cup, and is small in size with a small amount of material while using the material used in the conventional coffee filter such as cardboard. The present invention is intended to provide a disposable coffee filter that is formed into a thin film and that can be used safely under stable mounting with sufficient support.

In order to achieve the above-mentioned object, the present invention brings the front and back surfaces into close contact with each other, and is attached to the front and rear surfaces of the filter body for storing coffee powder and the front and rear surfaces of the bag body. In a coffee filter comprising a pair of supports that are hooked and supported on
The support body is attached to the front and rear surfaces of the front and rear surfaces of the bag body by fixing the fixed pieces integrally with a predetermined interval between the lower ends thereof, and the lower end portion of the fixed pieces, An extension support piece extending toward the lower end direction, a suspension arm piece extending upward from the lower end portion of the extension support piece along the fixed piece, and a suspension arm piece extending from the upper end portion of the suspension arm piece And a hanging piece extending so as to be folded downward downward, and when not in use, the support is folded flat so that it follows the front and rear surfaces of the bag, and when used, The stopper piece is extended together with the suspension arm piece and the extension support piece in the direction away from the front and rear surfaces of the bag body, and is hooked on the edge of the cup, and at the same time, the front and rear surfaces of the bag body are opened by the extension. The coffee filter is characterized in that the opening of the bag is opened and the bottom of the bag is raised. It is to provide.

  The support body is in an open state when a bag body, which is formed of a filter material such as filter paper that is not inherently rigid, is attached to the edge of the cup, and in a state in which it is resistant to hot water pressure poured. In order to support it, this bag body is securely attached and assembled.

In this regard, conventionally, as seen in the filter described in Patent Document 2, the tongue piece portion of the latch member is fixed to the bag body on the entire surface, and the tongue piece portion is attached to the bag body. It was fixed to the approximate center of the front and rear surfaces to achieve unity.
However, in the above conventional example, the latch member and the bag body, i.e., the support body and the bag body are integrated, but it is directly extended from the tongue piece portion integrally attached to the front and back surfaces of the bag body at the time of wearing. Even if the arm part is extended, the bag body opens the top opening, but the bag body does not change any further, so the bottom of the bag body is placed in the cup when it is attached to the cup. Go down and get immersed in the extracted coffee liquor.

  The present invention solves this problem, and extends an extended support piece from the lower end of the fixed piece further downward from the fixed piece fixed to the front and rear surfaces of the bag body. The suspension arm piece extends upward from the lower end of the arm. As a result, when the suspension arm piece is stretched to the left and right when being mounted on the cup, the lower end portion of the extension support piece is pulled out, and the fixed piece is supported above the extension support piece. Therefore, the height of the bag body is maintained. And at the same time, the bottom of the bag body will be pulled up as the fixed piece fixed to the front and back surfaces of the bag body is opened by the extension support piece drawer, away from the coffee liquid level to be extracted, Soaking of coffee powder is avoided.

  Further, according to the present invention, with respect to the support body, the fixing piece is composed of two left and right pieces parallel to each other with a space left and right with respect to the front and rear surfaces of the bag body, The extended support pieces are extended from each other, and a suspension arm piece is extended upward from the connecting portion passing between the extension support pieces through the left and right extension support pieces and the fixed piece, and the upper end of the suspension arm piece is further extended. An object of the present invention is to provide a coffee filter characterized in that a hooking piece formed in an annular shape is provided so as to surround the left and right fixing pieces and the left and right extension support pieces from a portion.

  It is another object of the present invention to provide a coffee filter characterized in that the extended support piece is provided with a lower end projecting downward beyond the bottom of the bag.

  Another object of the present invention is to provide a coffee filter characterized in that reinforcing pieces are integrally attached to the front and rear surfaces of the bag body along the upper portion of the support.

  Another object of the present invention is to provide a coffee filter, wherein the reinforcing piece is formed with one or a plurality of vertical fold lines.

  Further, in the present invention, the reinforcing piece is formed in a gate shape surrounding the upper and left and right sides of the support body fixed to the front and rear surfaces of the bag body, and the entire surface is integrally fixed to the front and rear surfaces. It is providing the filter of coffee characterized by becoming.

  It is another object of the present invention to provide a coffee filter, wherein the bag is formed by sealing an upper opening and enclosing a required amount of coffee powder inside.

  The filter of the present invention configured as described above, when not in use, the front and back surfaces of the bag body are encased in a state in which coffee powder is enclosed, and the support body that is wrapped in a flat state and fixed to the front and rear surfaces is It is placed in contact with each face. Then, it is stored and stored in a highly airtight packaging bag.

Needless to say, the packaging bag is for preventing the deterioration of the coffee powder, and other methods can be freely selected for storage.
When using the filter of the present invention, after taking out from this packaging bag, etc., first the upper part of the bag body is opened, for example, and then opened, and then the support body fixed to the front and rear surfaces Pull out the piece and stretch it in the order of the hanging arm piece and the extension support piece in order, and when it reaches the opposite edge of the cup, hook it on the edge and attach it to the outer side of the cup become.

  The front and rear surfaces of the bag body to which the fixed piece is attached as the hanging arm piece and the extension support piece are stretched by the pulling out of the above-mentioned latching piece open, thereby opening the upper opening widely and at the same time As the bag leaves, the bottom of the bag formed by the lower ends of both sides bends inward from the fixed lower end of the fixed piece, and the entire bottom is pulled up from the flat position when not in use. It will be.

  The filter of the present invention has a structure in which the suspension arm piece is extended through the extended support piece that extends downward from the lower end portion of the fixed piece, so that the latch piece is locked to the edge of the cup. When attached, the bag body is supported higher by the length of the extended support piece, and as a result, the bottom portion of the raised bag body is supported at a higher position.

  On the other hand, the reinforcing piece maintains the opening posture of the bag body when the bag body is held in the middle of the opening of the cup in this way, and is deformed by the pouring pressure of hot water to be poured. It will prevent it from closing or tilting. Among these, the reinforcing piece fastened along the upper part of the support body works effectively in maintaining the opening posture of the opening of the bag body, and is formed in a gate shape along the left and right side parts of the support body. The reinforcing piece to be acted effectively in maintaining the standing posture while maintaining the posture in which the bag body is opened.

  Further, the fold line formed vertically with respect to the reinforcing piece helps to open the entire bag body in a cylindrical shape together with the opening while exhibiting rigidity to the bag body. It becomes easy and it becomes advantageous for storing hot water.

  The filter of the present invention is formed only by a bag body formed in a simple bag shape using a filter as a material as described above, and a support made of a material having moderate rigidity such as cardboard on the front and rear surfaces of the bag body. Therefore, while it is a drip-type filter, there is an advantage that it is formed in a small size with a small amount of material, and it is possible to greatly reduce the manufacturing cost including the material cost, but it can be used regardless of the saving of this material cost. Because it can support the bottom of the bag body high when attached to the cup and avoid contact with the extracted coffee liquid, it can be used as a filter similar to the original drip filter while being disposable There is.

Next, in order to further clarify the present invention, the present invention will be specifically described based on the illustrated embodiment, and its features will be clarified.
1 to 6 show a first embodiment.
FIG. 1 is a front view of the filter according to the present invention in an unused state, and FIG. 2 is a front view of the disassembled state in which the support is removed from the bag constituting the filter according to the present invention. 3 is a vertical left side view taken along the line AA in FIG. 1, FIG. 4 is an enlarged left side view showing a part of FIG. 3, and FIG. FIG. 6 is a left side view with a part in cross section.

In the drawings, reference numeral 1 denotes a coffee filter according to the present invention, reference numeral 2 denotes a bag body, and reference numeral 3 denotes a support body that serves as a support means when the bag body 2 is attached to the edge of the cup 4.
The bag body 2 is formed by folding a vertically-long rectangular filter paper into two at the center and overlapping the both ends at the upper part, and the overlapping edge part 5 at the upper part and the right and left edges. The overlapping edges 6 and 6 are each heat sealed to form a rectangular bag. Then, prior to sealing the upper edge portion 5 inside, a required amount of coffee powder 7 is charged and enclosed.

The support 3 is made of cardboard having a required rigidity, and is attached to the front and rear surfaces 2a and 2b of the bag 2 one by one.
As shown in the figure, the support 3 is formed of a rectangular cardboard, and a notch 8 is formed so as to cut off a peripheral portion of the cardboard, thereby forming a latching piece 9 having a substantially rectangular frame shape. A vertically long suspension arm piece 11 is formed in the central portion of the cardboard by making two cuts 10 and 10 which narrow the width of the hook downward in the vertical direction from the top of the hook piece 9. Then, a fixed piece 12 and an extended support piece 13 are formed between the hanging arm piece 11 and the hook piece 9 in a state of being vertically continuous.

The formation of the support 3 shows the case where it is manufactured at the lowest cost by cutting out from cardboard and is advantageous for mass production, but it goes without saying that the method is not limited to this method.
Now, the support body 3 in which each piece is formed by making the notches 8, 10, 10 in the cardboard is fixed to the front and rear surfaces 2a, 2b of the bag body 2 with the fixed pieces 12, 12 aligned vertically. Integrate with.

  FIG. 2 shows an exploded view in which the support 3 is removed from the bag 2 in order to clarify the fixing position of the fixed pieces 12 and 12. The fixing pieces 12 and 12 are attached to the pasting positions 14 and 14 indicated by diagonal lines of the one-dot chain line so as to be pasted. By this sticking, the support 3 is fixed at a position where the center of the front surface 2a (the same applies to the rear surface 2b) is lowered.

  The extended support piece 13 connected to the lower end portion of the fixed piece 12 hangs along the front and rear surfaces 2a and 2b, aligns the lower end portion with the lower ends of the front and rear surfaces, and connects the left and right lower ends. The suspension arm piece 11 is extended upward from the upper edge of the installation portion 13a. And the latching piece 9 which will continue via this suspension arm piece 11 places this lower end part on the outer side of the said extension support piece 13, and this lower end part is substantially parallel to the lower end of the front and back surfaces 2a and 2b. I will let you.

The filter of the present invention is configured as described above. When not in use, the front and rear surfaces 2a and 2b of the bag body 2 are brought close to each other to be in a flat state, and the support members 3 are attached to the front and rear surfaces. Thus, the entire filter 1 is flattened and stored in a packaging bag or the like.
Then, when used, it is taken out from the sealed and stored packaging bag, the upper end of the bag body 2 is excised or opened and opened, and then the edges of the cup are used by using the support bodies 3 and 3 provided on the front and rear surfaces 2a and 2b. Will be locked.

5 and 6 show a state in which the filter body in which the bag body 2 is supported on the cup 4 by the support body 3 is mounted.
The filter 1 is mounted by opening and opening the upper end of the bag body 2 and then facing outward so that the respective latching pieces 9 of the support 3 provided on the front and rear surfaces 2a and 2b are separated from the surfaces 2a and 2b. The suspension arm piece 11 and the extended support piece 13 are pulled out through this operation, the entire support body 3 is extended in the front-rear direction, and the latch piece 9 is latched when it reaches the edge 4 a of the cup 4. It is mounted so as to cross over the opening.

  When the entire support body 3 is extended in this mounting, the suspension arm piece 11 connected to the upper end portion of the latching piece 9 extends while changing from a vertical posture to a horizontal posture. The extension support piece 13 connected to the lower end of 11 is lifted and the fixed piece 12 is pushed up, and the bag body 2 is raised accordingly.

  FIG. 6 shows a state in which the fixing piece 12 is pushed up and the bag body 2 is raised accordingly. When the hooking piece 9 is hooked on the edge 4a of the cup in a state where the hanging arm piece 11 is stretched so as to approach a horizontal posture, the hooking piece 9 when the hook is folded into a flat state is shown. Since the positions of the extended support piece 13 and the fixed piece 12 move upward with respect to the position, the bag body 2 rises accordingly.

  On the other hand, as the bag body 2 is raised, the extended support piece 13 is pulled back and forth by pulling the suspension arm piece 11, and the front and rear surfaces 2 a and 2 b are pulled away via the fixed piece 12. The surfaces 2a and 2b are bent inward from the lower end 12a to which the fixing piece 12 is fixed, and the bottom 15 of the bag body 2 is substantially raised.

  That is, the filter of the present invention extends from the lower end portion of the fixed piece 12 fixed to the front and rear surfaces 2a, 2b of the bag body 2 by extending the extended support piece 13 not fixed to this surface, and this extended support piece. Since the suspension arm piece 11 that extends from the lower end portion 13 to a horizontal posture is extended, the suspension arm piece 11 is lifted by the support body 3 and the extension support piece 13 is lifted by the length. It is possible to support the cup edge 4a high, and further, the bottom 15 of the bag 2 is pulled up to automatically avoid contact between the bottom 15 and the extracted coffee liquid level 16. It was supposed to be possible.

  Further, in the present invention, the fixed piece 12 extending from the extended support piece 13 is fixed to the substantially central portion of the front and rear surfaces 2a and 2b of the bag body 2 to thereby fix the fixed piece 12 made of cardboard. To reinforce the filter bag 2 and support the bag 2 that is opened in a cylindrical shape at the time of mounting, while maintaining the open state of the open opening 17 so that hot water can be poured smoothly and safely. It was.

  When the filter of the present invention thus constructed is attached to the cup 4 as described above, hot water is poured into the coffee powder 7 inside the bag body through the opening 17 and the coffee liquid filtered through the bag body is stored in the cup. It will be. At this time, the bag body 2 is supported at a high position with respect to the cup 4 and further supported at a position close to the edge 4a of the cup by pulling up the bottom portion 15. Needless to say.

Next, FIG. 7 shows a second embodiment of the coffee filter according to the present invention.
In this embodiment, reinforcing pieces 18 made of cardboard are attached to the front and rear surfaces 2a, 2b of the bag body 2 of the filter 1, and the bag body 2 is prevented from being deformed by pouring hot water during use. This is an example of doing this. In the drawings, the same portions as those described in the embodiment are denoted by the same reference numerals, and the description thereof is omitted. The same applies to other embodiments thereafter.

  The reinforcing piece 18 is formed in a gate shape, and is integrally attached so as to surround the upper portion and both side portions of the support 3 fixed to the front and rear surfaces 2a and 2b, thereby reinforcing the front and rear surfaces 2a and 2b. It is like that. Further, here, two fold lines 19 are formed with a space between the side pieces 18a of the reinforcing piece 18 and can be bent into three with the lines as base points.

When the filter 1 is mounted on the cup 4 and the bag body 2 is opened in a cylindrical shape, the reinforcing piece 18 receives the pressure and weight by pouring hot water while stably maintaining this opened posture. The horizontal state 18a is adhered in the width direction of the front and rear surfaces 2a, 2b to maintain the open state, and the vertical pieces 18b, 18b are adhered to the bag body. The standing posture is maintained.
And the said fold line 19 formed in the horizontal piece 18a bends according to the opening of a bag body, and the opening of the opening part 17 is promoted and secured.

  The vertical pieces 18b and 18b are reinforced in cooperation with the fixed pieces 12 that are directly attached to the front and rear surfaces 2a and 2b of the bag body 2, and sufficient strength is obtained only by the fixed pieces. When it is obtained, the vertical pieces 18b, 18b can be omitted.

  Next, FIG. 8 shows a third embodiment of the present invention, in which a portal reinforcing piece 18 is attached to the front and rear surfaces 2a and 2b of the bag body 2, while the attachment position of the support body 3 is attached. Is moved down, and the lower end portions of the hooking piece 9 and the extended support piece 13 are fixed so as to protrude below the bottom portion 15 of the bag body 2. This embodiment shows an example in which the height of the support of the bag body 2 by the support body 3 is further increased based on the fact that the bag body 2 is reinforced by the attachment of the reinforcing piece 18.

  As described above, the support body 3 acts as a support for the bag body 2 on the edge 4a of the cup 4 at the time of mounting, but at the same time, the fixing pieces 12 and 12 which are directly fixed to the front and rear surfaces 2a and 2b have no waist. When the support body 3 is lowered and the fixing position of the fixed piece 12 is moved below the front and rear surfaces, the bag body is supported by supporting the bag body formed from filter paper or the like and maintaining the standing posture. As a result of losing the support of the upper half of 2, there is a risk that the opening 17 closes or the posture collapses and the poured hot water overflows.

  The fastening of the reinforcing piece 18 solves this problem, and the support body 3 also serving as reinforcement can be fastened to the lower side of the bag body 2 by the fastening of the reinforcing piece 18. It is. The movement of the fastening position can support the bag body 2 at a sufficient height when the cup 4 is mounted, and the bottom portion 15 can be separated from the liquid surface 16.

The front view of the filter of coffee concerning the present invention. The disassembled front view explaining the fixing position of the fixing piece of the support body fixed to the front and back surfaces of the bag body. FIG. 2 is a longitudinal left side view taken along a line AA in FIG. 1. FIG. 4 is a partially enlarged left side view of FIG. 3. The perspective view explaining a use condition. The left view made into the partial cross section explaining the use condition. The front view explaining a 2nd embodiment. It is a front view explaining a 3rd embodiment.

Explanation of symbols

1 Filter 2 Bag 2a, 2b Front and back surfaces of bag
DESCRIPTION OF SYMBOLS 3 Support body 4 Coffee cup 4a Coffee cup edge 7 Coffee powder 9 Hanging piece 11 Hanging arm piece 12 Fixed piece 13 Extension support piece 15 Bottom part of bag body 16 Liquid surface of extracted coffee liquid 17 Opening part of bag body 18 Reinforcing piece 19 Folding line

Claims (7)

A coffee bag comprising a filter bag for storing coffee powder between the front and back surfaces, and a pair of supports that are fastened to the front and rear surfaces of the bag and hooked and supported on the edge of the cup. In the filter of
The support body is attached to the front and rear surfaces of the front and rear surfaces of the bag body by fixing the fixed pieces integrally with a predetermined interval between the lower ends thereof, and the lower end portion of the fixed pieces, An extension support piece extending toward the lower end direction, a suspension arm piece extending upward from the lower end portion of the extension support piece along the fixed piece, and a suspension arm piece extending from the upper end portion of the suspension arm piece And a hanging piece that extends so as to be folded downward downward. When not in use, the support body is folded flat to follow the front and rear surfaces of the bag body. The stopper piece is extended together with the suspension arm piece and the extension support piece in the direction away from the front and rear surfaces of the bag body, and is hooked on the edge of the cup, and at the same time, the front and rear surfaces of the bag body are opened by the extension. The coffee filter is characterized in that the opening of the bag is opened and the bottom of the bag is raised.   2. The fixed piece according to claim 1, wherein the fixed piece is composed of two pieces of left and right parallel to the front and rear surfaces of the bag body with a space left and right, and a pair of left and right extended supports from the lower ends of the two pieces. Extending each of the pieces, and extending a suspension arm piece upward from the connecting portion passing between the extension support pieces through the left and right extension support pieces and the fixed piece, and further from the upper end portion of the suspension arm piece A coffee filter characterized by extending hooking pieces formed in an annular shape so as to surround right and left fixed pieces and left and right extension support pieces.   3. The coffee filter according to claim 1 or 2, wherein the extended support piece is provided with a lower end projecting downward beyond the bottom of the bag.   4. The coffee filter according to claim 1, wherein a reinforcing piece is integrally fixed to the front and rear surfaces of the bag body along the upper portion of the support body.   5. The coffee filter according to claim 4, wherein the reinforcing piece is formed with one or a plurality of vertical folding lines.   6. The reinforcing piece according to claim 4 or 5, wherein the reinforcing piece is formed in a gate shape surrounding the upper and left and right sides of the support body fixed to the front and rear surfaces of the bag body, and the entire surface is integrally fixed to the front and rear surfaces. A coffee filter characterized by wearing. 7. The coffee filter according to claim 1, wherein the bag is formed by sealing an opening and enclosing a predetermined amount of coffee powder therein.

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